Pasteurizing apparatus



1,624,573 Apnl 12 1927' R. B. BAG-BY PSTEURI ZING APPARATUS Filed Aug. 5l, 1926 I Patented Apr.v 12, 1927.

RALPH B. BAGBY, F CEDAR RAPIDS, IOWA, ASSIGNOR TO J. G. CHERRY COMPANY,- OF

1,624,573 .PATEN'Iy OFFICE.

CEDAR RAPIDS, IOWA, A CORPORATION 0F IOWA.

'PASTEURIZING APPARATUS.

Application led August 31, 1926. Serial No. 132,880.

This. invention relates to apparat-us for Pasteurizing milk and including a Pasteurizing tank, a pipe line connected with the tank to receive Pasteurized milk therefrom,

and valve devices in the connection whereby the tank outlet and the pipe line inlet are opened and closed conjointly.

In Past-eurizing vmilk by the batch method it is customary, according to present requirements, to hold the milk ina Pasteurizer or container for thirty minutes at a temperature approximately 145. The outlet valve for a Pasteurizeris operated intermittently and it is difficult and practically impossible `permitted to collect in the connection with the pipe line it will contaminate the Pasteurized milk flowing from the tank when the out- .let valve is opened.

One object of this invention is to prevent leakage from the Pasteurizing tank from contaminating Pasteurized milk discharged from the tank by providing means for disposing of such leakage and for sterilizing the connection between the Pasteurizer tank and the pipe linep'reliminarv to discharging the Pasteurized milk from the tank into the pipe line. C

More specifically this object is to trap leakage of milk through the valve outlet of the Pasteurizing tank during the Pasteuriz ing process and to permit it to escape from the connection before it reaches the pipe line valve, and to provide means for sterilizing the trap in the connection between the ta'nk and the pipe line before permitting thc Pasteurized milk to flow from the Pasteurizing tank so that the Pasteurized milk wi`.l not be contaminatedA by any unPasteurized milk `that may have leaked by the outlet valve .during the Pasteurizing process and remained in the connection between the tank and the pipeline or adhering to any of the parts therein.

matically makea time and, temperature record of the Pasteurizing operationand of the sterilizing operation of the connection Vbetween the tank and the pipe line prelimi` -nary to discharging' the Pasteurized pipe from the tank into the milkline whereby a 4record may be preserved upon the condition of the milkand as a check` upon the operator to' insure proper attention to hi duties. A further object of the inven ionk is to pro`- to prevent some leakage. If this leakage is` Another object of the invention is to auto-v vide-a drip-leak in the connection between the Pasteurizer tank and the pipe line, which remains open to dispose of leakage from the tank while the tank outlet valve and the pipe vline valve are closed, and. thermal means for maintaining a record of the temperature of liquid escaping through the drip leak so that the condition ofthe tank outlet valve may be constantly observed.

And as further. object .of the invention is to. provide a connection between a Pasteurizing tank and a milk line having direct line operating lmeans for conjointly closing and opening the tank Avalve and the` pipe line shown af selected embodiment of the invention andreferring thereto: .p

ig. 1 is a sectional elevation of the in-v vention as itappears in actual use.

Fig.` 2 is a detail view showing a specimen record.'

Referring to the-drawings 3 is a Pasteurizer. tank which is connected byl a casing 4 with the pipeline 5. The casing has an opening 6 at one end which registers with Sgs.

the outlet l7I from the Pasteurizing tank and a valve. disk 8 engages a seat 9 around sand r i opening.y A valve disk 10 engages a seat 11 in the casing` between the Pasteurizer tankand .the pipe line. The valve -8 may bere-l. fe'rred to as. the tank voutlet valve and the valve 10 may be' referred to as the pipe line valve' since theformer controls the outfiowcof Pasteurizedmilk from the tank and the lat.V

ter controls the flow of this P asteurized milk` to the pipe line.

These two valves, .8 and 10, are mounted on the same stem'12'whicli. 1 i

project throughthe yend of the casingmand.; vis operated 'by ahand wheel.13 to move-y?,-

the .valves `simultaneously* and .open and; close communication between the ta'nk and.'

provided with a ring cam 15. The, valve l1U 1s loose on the stem and va collar 16 is pinned.

"the Pipe line- A .yoke .14 'is` made integrali or otherwise rigid with the valve 10 and is l wbu ar Aextension 27 and the casing 32 wyriainz process. Anymilk that may leak to the stem within the yoke to engage the from the tank aroundthe valve disk 8 and yoke on the inward movement of the stem into the casing 4 will drain out of the casand the valve 10 on the outward movement ing into the extension 28 through the openof the stem. The valve 8 isfbored at 16 to ing 35 upon the thermal bulb 31 and through receive the end of the stem on ,which the the opening 36. It there is a substantial leak valve is loosely mounted. A spring 17 is the interposed between the valve 8 and t e yoke `it makes uponthe chart 50. The two pens 14 to compensate for any irregularities of 46 and 47 wlll preferably mark 1n different fit' between the valves. A collar 18 is pinned to the stem` to engage the shoulder 19 and readily distinguishable.l It isdiflicult topre 'form a stop limiting the outward movement vent some leakage around the valve disk 8 of the stem. The handle 13 has a projecbut ordinarily the leakage is not material in tion 19X which is threaded in the boss 20 on quantity but any leakage of un-Pasteurized the cap 21 which is secured to the casing milk is objectionable if this leakage isperby a union 22. This projection is recessed mitted to mix with the Pasteurized milk. to accommodate a spring 23 arranged on the Any usual leakage will escape from the cas stem between a collar 24 pinned to the stemwing through the opening 29', the valve disk anda collar 25 seated against the contracted 29 remaining unseated while the valve disk inner end 26 of the ca'p. 8 remains seated; and since the opening A drip-leak valve disk 27 is arranged in a 29V is spaced from the pipe line valve disk tubular extension 28 of the casing to engage 10, leakage will escape from the casing bea Seat 29 around an opening 29' in the cas- `fore it has an opportunity to reach the'pipe ing. Thisvalve is normally urged to its line valve, When the Pasteurizing process seat by a spring 30. A thermal bulb 31 is is completed and before the Pasteurized milk arranged in a casing 32 which is mounted on is permitted to ilwto the pipe line, the the extension 28 and this bulb is connected steam valve 43 is opened to admit steam pen 47 will indicate it by the mark which v i colored inks so that the markings will be by a tube 33 with a recorder 34. An openaround the valve disk 37 which is now un in 35 forms a connection between the tuseated'by the cam, to sterilize the chamber the' latter is provided with an opening 36 to condensation ofthis steam escaping through rmit the escape of milk which may pass the drip-leak valve land the `opening 36.l

om the 'casing 4i'nto the extension 27 and This condensation drops upon the thermal casing 32. I prefer to arran e the termal bulb 3l and the time and temperature therebulb in horizontal position be ow the openof is indicated by the pen 47 which marks ing 35 so that milk leakage will drop direct theA line 49. Then the steam valve 43 is upon the thermal bulb.

A steam valve disk 37 is arranged in a move. the stem outward. The spring 17 untubular extension 38 'from the vcasing to seats the valve 10 and at the same time' and 51 in the casing and all the parts therein,

loo

closed and the hand wheel 13 is turned to engage a seat 39 around an opening 40 in moves the cam 15v away `from the valvedisks the casing. This valve is normally ur ed 27 to its seat by Aa spring 41 in the extension and a steam pipe 42. is connected to the about the same time that thel pipe line valve extension and to a source of provided with a shut-oil valve 43. releases with the outward movement o A thermal bulb 44 is arranged within the stem the tank outlet valve'is opened to tankl and isl connected by tube 45 with the permit the Pasteurized milk to flow through recorder 34. This recorder has two pens one the casing into the pi line.-4 The parts are of which, 46, is connected with the bulb timed so that the tan 44and the other, 47 is connected with bulb 31 so that the pen 46 may mark solid line 48 and the pin 47 may mark broken line 49 on the chart 50.

In practice the hand ated to move the stem inward and seat the izing process and leakage through the outtank outlet valve 8 and the pipe line valve let valve from the Pasteurizin -tankand the 10. Thecollar 16 engages the oke to move sterilizing process to show w the valve v1() to its seat and tlie spring 17 taking place and whether or not the operaoperates toseat the valve 8. At the same tor is properly attending to his duty to time the cam 15 engages and unseats the sterilize the parts and avoid contamination drip leak Yvalve disk 27 and the steam valve by this leakage; dis `37. The tank having received a sup- V This invention presents many lnovel andiV ply of mllk the Pasteurizmg process may belmportant advantages in this art where much gin. The pen 46 marks the line 48 to indi:

effort and expense are devoted to supplying cafe the time and temperature of the Pas- Pasteurized milk. `llt iscontended;,.that a drop or less' ofi raw milk may, contain and 37 so that the drip-leak valve and the open until the steam valve and the drip-leakl the valve are closed and the pipe line valve is the opened.' The pen markings on the chart provide an accurate and permanent record supply and is is opened. -As the tension on spring 417A the the steam valve will both be closed at or outlet valve will not l wheel-13 is operas to time and temperature of the Pastcurl 12e at leakage is les be determine whether or not the invention has been prac` ticed as intended to be and the conditions` enough bacteria -to contaminate all the milk with which it mixes. I not only provide for trapping leakage from the Pasteurizer tank before it enters the pipe line, and for the escape of this leakage from the casing during Pasteurization, but I also provide for thorough sterilization of the chamber which receives this leakage and through which the Pasteurized milk must ow to the pipe line, and this includes complete Pasteurization of all of the parts within the chamber with which the raw milk leakage may contact; so that when the Pasteurization process is completed and the rPasteurized milk is permitted to tlow to the pipe line it will flow through, a casing connection not only free from un-Pasteurized milk but thoroughly sterilized, and this insures that the Pasteurw ized milk will not be contaminated by any eakage that has occurred or by any other unfavorable condition that may have developed in the casing connection Pasteurizing tank and the pipe line. Not only does my invention insure this resultwhen it is practiced as it should be buta telltale record'is preserved showing, with relation to the sterilizing process, whether the leakage has been normal or excessive,'and whether or not and when the sterilizing operation has been performed. The record indicates the Pasteurizing process in time and temperature, and the sterilizing process in time and temperature with relation to the Pasteurizing (process so that itv can always by reference to the chart of the two other. y

I claim: 1, The combination of a Pasteurizing tank. having an outlet, a pipe line, a connection between said outlet and said pipe line comprocesses `with relation to each prising a casing, valves in said casing for said outlet and said pipe line, a drip-leak for the 'casing between said valves and comprising a valve, and movable means within the casin connecting theoutlet valve and the pipe ine valve for opening and closing said valves conjointly and for opening and closing the drip-leak valve.

2. The combination of a Pasteurizing tank ,thaving' an outlet, a pipe line', .a connection between said outlet and said pipe line comprising a casing, valves in said casing for said outlet and said pipe line, a stem con necting said valves for con]o1nt operation, a

ydrip-leak for the casing between said valves comprising a valve, and means within the casing movable with the stem for opening and'closing the drip-leak valve.

3. The combination of a Pasteurizing tank having an outlet, a piy e line, a connection between saidl outlet'an said pipe line comprising a casing, valves in said casing-for said etween the y prlsmg a casmg, valves 1n sald caslng for said outlet and said pipe line, a drip-leak yfor the casing between said valves and com-- prising a valve, movable means within thev casing connecting the outlet valve and the pipe line valve for opening and closing said valves conjointly, and other means operating with said movable means for opening and closing the drip-leak valve.

5. The combination of a Pasteurizing' tank having an outlet, a. pipe line, a connectionv between said outlet and said pipe line comprising a casing, valves in said casing for said outlet and said pipe line, a drip-leak for the casing between said valves and comprising a valve, movable means within the casing connecting the outlet valve and the pipe line valve for opening and closing said valves conjointly, and a cam within the casing operated by said movable means for opening and closing the drip-leak valve.

6. The combination ofaPasteurizing tank i.having an outlet, a pipe line, a Aconnection between said outlet and said pi e line'comprising a casing, valves in sai casing for saidoutlet and said pipe line, said casing having a drip-leak opening between said' valves, a lvalve for said opening, movable means within the casing for opening and closing thedrip-leak valve, and other means within the casing for opening and closing the outlet valve and the pipe line valve andmovable conjointly with and independ ently of the means for opening and closing the drip-leak valve.

7. The combination of a Pasteurizing tank having an outlet, a pipe line, a connection between said outlet and said pipe line comprising a casing, valves in said casing forV said outlet and said pipe line, said casing having a drip-leak opening` between said valves, a valve for said opening, a cam movable in the casing for opening and closing the drip-leak valve, and means for opening and closing the outlet valve and the pipe line valve and for'operating the cam to open and close'the drip-leak valve.

l 8. The combination of a Pasteurizing tank having anoutlet, a pipe line, a connection between said outlet and said pipe line comprising a Casin valves in said casing. for said outlet an said pipe line, a stem for operating said valves conjointly, a drip-leak l the casing said valves. l

1l. The combination of a Pasteuriaing tank having an) outlet, a pipeline, a connec-` furthe casing between said valves and com? having an outlet, a pipe line, a connection.

between said outlet and said pi e line comprismg a casing, valves 1n sai said outlet and said pipe line, the chamber yin the casing between the tank outlet valve and the pipe line valve comprsin a trap to receive leakage from the tank, al rip-leak for the casing between said valves and comprisin a valve, means for admitting steam to sai chamber to sterlize the chamber and the parts therein while the tank outlet valve and the pipe line valve are closed and the drip-leak valve is open, means for opening and closing the tank outlet valve and the pipe line valve, and means for opening and closing the drip-leak valve and the steam valve. f e 'f 10, The combination of a Pasteurizingtank having an outlet, a pipe line, a connection between said outlet and s'aid pipe line comprising a casing, valves in said casing for said outlet and said pipe line, a drip-leak for the casingbetween said valves, -a steam line connection to said casingbetween said valves, there being an vopening in the casing communicating with said connection, a valve for said opening, and means within 'for opening and closing all of tion between said outlet and said pipe line comprising a casing, valves in said casing for said outlet and said pipe line, a drip-leak for the casing between said valves and com prismg a' valve, a steam line connection to said casing between said valves, there being an opening in the casin Y communicating with said connection, a valgve. for said opening, movable means within the casing connecting the outlet valve 'and the pipe line valve for opening and closing said valves' conjointly, and other means operated by said movable means for opening and closing the drip-leak valve and the steam valve.

`12. The combination of a Pasteurizing tank having an outlet, a pipe line, a connection between said outlet and said pipe line comprising a` casing, valves in said casing for said outlet and saidpipe line,\-a stein casing for inthe casing for operating. said valves, a spring on the stem operatively engaged withv the outlet valve for enabling relative movement of the-stem and the outlet valve, a dri leak for the casing between said valves i and) comprising a valve, and means within the casing movablewith the stem. for opening and closing the drip leak valve.

13. The combination of a Pasteurizing tank having an outlet, a pipe line, a connec-4 tion Abetween said outlet and said pipe line comprising a casing', valves in said casing for said outlet and said pipe line, a dri leak for the Vcasing between said valves an comprising a valve, means -for opening and closing said' valves, and thermal recording means connected to the casing for indicating leakage into the casing.

14. The combination of' a Pasteurizing tank having an outlet, a pipe line, a connection between said'outlet and said pipe line comprising a casing, valves-in saidcasing for said outlet and said pipe line, a drip leak forthe casing between said valves and comprising a valve, means for opening and closing said valves, and thermal recording means connected to the drip leak for-indi i eating leakage therethrough.

15. The combination of a Pasteurizing tank having an outlet, a pipe line a connec tion between said out-let and said pipe line comprising a casing, valves in said casing for said outlet and said vpipe line, a drip leak'for the casing between said valves and comprising a valve, means'for opening and closing said valves, means for sterilizing the, casing, and thermal recording means -connected to the tank and to the casing for recording the Pasteurizing process and sterilizng process lin, their timejrelation to each other.` i 'l 16. The combination of a Pasteurizing tank having an outlet, a pipeline,l a connection between said outlet and said pipe line comprising a casin valyes'insaid casing for said outletv an said pipe line, a. dri leak for the casing between said valves an comprising a valve, means foropening and f closing said valves, means for supplying steam to'the'casin to'sterilize the'casing, and thermal recor ng means comiectedto4 the tank and to the casing for' recording the y -Pasteurizing process and the-sterilizzing pro-Quo los RAJJriiiSQBAGBY. 

